My parents grounded me unsuccessfully

So. I've been grounded a lot. Most recent was my messages with my friend, and he was being a dumbass, so my parents grounded me. Other times, my phones had parental control apps that they've bought, but I really easily broke those so I could do stuff on my phone, and they eventually gave up and took it entirely. They eventually gave it back but it was locked with the time limit thing on android. I tried for a few weeks to bypass it but no luck. Eventually, I found my sisters old phone in the junk drawer, and decided to factory reset it. I didnt know frp would be a problem though. Frp is factory reset protection. It basically just makes you put in the password to the previous owners email or something to ensure you didnt steal the phone, but the previous owner was my sisters dad. I eventually went to my friends house and spent a few hours downloading malware on his old pc until I got something that I thought would work. After legitimately six hours straight of trying to find a way, it reset. It's old and laggy, lagging on tiktok lite, but it works. I've been barely hiding it and my parents have mo clue. I thought they'd see it on the wifi or see the phone missing, but they havnt noticed for a month or two. My dad got a new phone, and assuming they'll do the same thing with the old one, I'll just wait a bit until they forget about it, and I'll have a way better phone than this one.